Aortic sac enlargement after endovascular aneurysm repair: volume-related changes and the impact of intraluminal thrombus
| Autor: | Nerijus Misonis, Inga Urte Builyte, Ruta Zulpaite, Arminas Skrebunas, Rytis Bliudzius, Tomas Baltrunas, Givi Lengvenis, Germanas Marinskis |
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| Rok vydání: | 2019 |
| Předmět: |
Diameter measurement
intraluminal thrombus medicine.medical_treatment 050801 communication & media studies macromolecular substances Endovascular aneurysm repair abdominal aortic aneurysm 0508 media and communications Aneurysm follow-up medicine Intraluminal thrombus EVAR cardiovascular diseases Aortic sac Computed tomography angiography Original Paper AAA volume medicine.diagnostic_test business.industry 05 social sciences medicine.disease Abdominal aortic aneurysm cardiovascular system AAA diameter Nuclear medicine business Volume (compression) |
| Zdroj: | Polish Journal of Radiology Polish journal of radiology, Warsaw : Medical Science International ; International Scientific Information, Inc, 2019, vol. 84, e530-e536, p. e530-e536 |
| ISSN: | 1899-0967 1733-134X |
| DOI: | 10.5114/pjr.2019.91260 |
| Popis: | Purpose: Abdominal aortic aneurysm (AAA) growth after endovascular aneurysm repair (EVAR) is still unpredictable. The issue of optimal frequency of computed tomography angiography for surveillance and its measurement method accuracy remain unclear. We aimed to assess the value of abdominal aneurysm sac volume measurement for detecting expansions and the association of preprocedural intraluminal thrombus (ILT) volume with aneurysm sac growth following EVAR. Material and methods: A total of 107 patients underwent elective EVAR. Inclusion criteria provided a cohort of 39 patients. Changes of postoperative maximum aneurysm sac diameter and AAA volume were calculated. Volumetric AAA changes and demographic data of the cases with clinically irrelevant AAA diameter enlargement were evaluated. Preoperative ILT volumes were collected. ILT and AAA sac volume ratio was calculated. Statistical data analysis was performed using standard methods. Results: The mean changes of maximum AAA diameter and volume in percentage after EVAR were -5.08 ± 8.20 mm and -13.39 ± 23.32%, respectively. A moderate positive linear correlation between those changes was found (R2 = 0.731; p < 0.0001). The mean relative AAA volume increase in cases without clinically relevant diameter enlargement was 11.50 ± 8.27%. The means of ILT and AAA sac ratios were 0.59 ± 0.17 and 0.52 ± 1.8 in growing AAA sac and in stable or shrinking AAA sac groups, respectively (p = 0.308). Conclusions: Volumetric AAA measurement may be useful as an additional method to diameter measurement after EVAR to identify clinically relevant sac growth. Preoperative volume of ILT may not significantly affect the growth rate of AAA after EVAR. |
| Databáze: | OpenAIRE |
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